The Geasa-Marana Library opened on March 2, 1977 to serve the newly-incorporated community of Marana, Arizona.

Originally a 1,000-square-foot room in the Pima County Government Complex with 3,000 books, the library was enlarged and remodeled in 1995 to 2,900 square feet, which included a 420-square-foot meeting room and five computers for the public to use. In February 2005, the Geasa-Marana Branch was renamed to honor Marlyn Mae Geasa, the Circulation Manager and Library Associate at the library from 1980 until her death in 2003. She presented countless storytimes and library programs to generations of children, and recommended good books to read and community information to countless adults.